* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    width: 100vw;
    height: 100vh;
}

#app {
    width: 100%;
    height: 100%;
    overflow: hidden;
    /*超出内容区域隐藏*/
}

/* 公共样式：水平弹性布局 */
.flex-row {
    display: flex;
    flex-direction: row;
}

/*公共样式：垂直弹性布局*/
.flex-column {
    display: flex;
    flex-direction: column;
}

/*完美居中方案*/
.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.head {
    flex: 1;
    background: linear-gradient(135deg, #81fbb8, #28c76f);
}

.head div {
    color: #fff;
}

.home-icon,
.share-icon {
    flex: 1;
}

.music-name {
    flex: 5;
}

.body {
    position: relative;
    flex: 9;
}

.body-bg {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    filter: blur(30px);
}

.cover {
    position: relative;
    width: 20rem;
    height: 20rem;
    animation: loop 5s infinite linear;
    /*执行loop动画 一次执行需要5秒，执行无限次，匀速执行*/
    animation-play-state: paused;
    /*暂停*/
}

.playing {
    animation-play-state: running;
}


.cover-img {
    width: 50%;
}

.cover-disc {
    width: 90%;
}

.cover img {
    position: absolute;
}

.foot {
    flex: 2;
    background: linear-gradient(135deg, #81fbb8, #28c76f);
}

.box-time,
.box-progress {
    flex: 1;
    color: #fff;
    font-size: 0.8rem;
}

.box-time div {
    padding: 5px 10px;
    flex: 1;
}

.time-total {
    text-align: right;
}

.box-progress {
    padding: 0 10px;
}

.progress-touch {
    height: 100%;
    width: 100%;
}

.progress-bg {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.3);
}

.progress {
    width: 0;
    height: 100%;
    background: #fff;
}

.box-btns {
    flex: 4;
}

.box-btns>button {
    background: transparent;
    border: 0;
    color: #fff;
}

.btn-loop,
.btn-list {
    flex: 1;
}

.btn-prev,
.btn-next {
    flex: 2;
}

.btn-play-pause {
    flex: 3
}

/* 歌曲列表弹层样式 */
#music-list-dialog {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    top: 10rem;
    background: rgba(0, 0, 0, .8);
    display: none;
    /*默认隐藏弹框*/
    overflow-y: scroll;
    /*当y轴内容超出显示区域时，出现滚动条*/
}

#btn-close {
    position: fixed;
    top: 10.1rem;
    right: .5rem;
    color: #fff;
    font-size: 1.5rem;
}

#music-list {
    list-style: none;
}

#music-list li {
    padding: 0 .5rem;
    color: #ccc;
    height: 3rem;
    line-height: 3rem;
    font-size: .9rem;
    border-bottom: 1px dotted rgba(255, 255, 255, .2);
}

/* 正在播放的歌曲激活样式 */
.active {
    color: #28c76f !important;
    /*强调当前属性优先级最高*/
    background: rgba(255, 255, 255, .5);
}

/* 创建自定义动画 */
@keyframes loop {

    /* 定义动画关键帧 */
    from {
        transform: rotate(0deg);
        /*旋转角度：0*/
    }

    to {
        transform: rotate(360deg);
        /*旋转角度：360*/
    }
}